CN215883965U

CN215883965U - Novel bicycle driving structure

Info

Publication number: CN215883965U
Application number: CN202021275806.9U
Authority: CN
Inventors: 袁爱江
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2022-02-22
Anticipated expiration: 2030-07-03

Abstract

The utility model relates to a novel bicycle driving structure, which belongs to the technical field of bicycles and comprises a driving wheel, wherein the driving wheel is arranged in the middle of a bicycle and is of a gear type, and the driving wheel is connected with a rear gear through a chain; a ratchet wheel is concentrically and coaxially arranged in the rear gear; welded fastening extension frame on the support of rear gear, the tip that the rear gear was kept away from to the extension frame is higher than the rear gear, the tip of extension frame rotates the first gear of installation, still fixed mounting connecting rod on the support of rear gear, the tip of connecting rod is less than the rear gear and rotates the installation second gear, the connection order of chain is drive wheel, first gear, second gear, rear gear, drive wheel, and wherein the downside of chain passes through from the top of rear gear, the corotation of the drive wheel drive rear gear and rear wheel. The utility model can form complete circular motion by treading at a small angle up and down, and can play a labor-saving effect.

Description

Novel bicycle driving structure

Technical Field

The utility model relates to a novel bicycle driving structure, and belongs to the technical field of bicycles.

Background

The basic structure of the existing bicycle is that pedal arms and pedals are fixedly arranged at two ends of a middle shaft at the lower part of a bicycle frame, the pedals are circularly treaded by the two feet of a rider to drive a chain wheel on the middle shaft to rotate, and the chain wheel on the rear wheel is driven by a chain to rotate so as to push the bicycle to move forwards.

But also has a great disadvantage that because the arrangement of 180 degrees is needed between the two pedal arms, when riding, after the bicycle needs a certain speed, two pedals can cross the top dead center and the bottom dead center to form circular motion to finish relatively stable pedal force output, and pedal force output can only be realized when the pedal is treaded forwards within an angle range of about 100 degrees after crossing the top dead center, and because the angle of most pedal force is not easy to be adjusted to the direction close to the tangent line of the outer circle of the chain wheel to form larger pedal rotating moment, only the angle range of about 50 degrees can generate larger pedal rotating moment, the rest 260 degrees of angular rotation basically does useless work, and because the pedal force is smaller in the working angle of each circle and must rotate for one circle to do work, the pedal force is seriously wasted, and is limited by the motion distance of human body legs and the minimum ground clearance of the pedals, the design length of the pedal arm can only be limited within a certain range, and larger rotating torque cannot be formed, so that the physical consumption of a rider during riding is large, and the rider is labor-consuming and heavy to operate during climbing.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel bicycle driving structure which can form complete circular motion by treading at a small angle up and down and has a labor-saving effect.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a novel bicycle driving structure comprises a driving wheel, wherein the driving wheel is arranged in the middle of a bicycle and is of a gear type, and the driving wheel is connected with a rear gear through a chain; a ratchet wheel is concentrically and coaxially arranged in the rear gear; welded fastening extension frame on the support of rear gear, the tip that the rear gear was kept away from to the extension frame is higher than the rear gear, the tip of extension frame rotates the first gear of installation, still fixed mounting connecting rod on the support of rear gear, the tip of connecting rod is less than the rear gear and rotates the installation second gear, the connection order of chain is drive wheel, first gear, second gear, rear gear, drive wheel, and wherein the downside of chain passes through from the top of rear gear, the corotation of the drive wheel drive rear gear and rear wheel.

The technical scheme of the utility model is further improved as follows: and a round rod fixed with the driving wheel is rotatably arranged between the retaining rings.

The technical scheme of the utility model is further improved as follows: the mounting bracket is fixed on the bracket body in front of the retainer ring, the pedal is rotatably mounted on the mounting bracket, and the pedal can be placed on the round rod to be stepped on.

The technical scheme of the utility model is further improved as follows: the driving wheel can be driven to do complete circular motion by stepping the pedal up and down.

The technical scheme of the utility model is further improved as follows: a plurality of driven gears with different sizes are installed at the concentric position of the rear gear, and variable speed adjustment is performed by adjusting different driven gears to be rear gears.

Due to the adoption of the technical scheme, the utility model has the following technical effects:

the bicycle is characterized in that the rear gear and the rear wheel are arranged on the bicycle frame, the rear gear is arranged on the bicycle frame, and the rear gear is arranged on the bicycle frame.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

The device comprises a driving wheel 1, a driving wheel 2, a chain 3, a rear gear 4, an extension frame 5, a first gear 6, a connecting rod 7, a second gear 8, a retainer ring 9, a round rod 10, a mounting frame 11 and a pedal.

Detailed Description

The utility model is described in further detail below with reference to the following figures and specific embodiments:

the utility model discloses a novel bicycle driving structure, which is shown in figure 1. The driving wheels 1 are arranged on two sides of the middle part of the bicycle, and the driving wheels 1 are gears. Rear gears 3 are arranged on two sides of a rear wheel of the bicycle, and a plurality of driven gears with different sizes are coaxially arranged on the rear gears 3; a ratchet wheel is concentrically and coaxially fixedly arranged in the rear gear 3. Fixedly mounting an extension frame 4 on a bracket for mounting the rear gear 3 and the driven gear by welding, wherein the extension frame 4 is in a strip shape, a round through hole is formed in the end part of the extension frame far away from the rear gear 3, the position of the through hole is higher than that of the rear gear 3, a first gear 5 is rotatably mounted through the through hole, and the height of the first gear 5 is higher than that of the rear gear 3; a connecting rod 6 is fixedly arranged on the bracket of the rear gear 3 in a welding mode, the connecting rod 6 is also in a long strip shape, and a second gear 7 is also rotatably arranged at the end part of the connecting rod through a through hole.

The chain 2 is arranged between the driving wheel 1 and the rear gear 3, the chain 2 is sequentially wound on the driving wheel 1, the first gear 5, the second gear 7, the rear gear 3 and the driving wheel 1 to form complete chain 2 transmission, wherein the lower side of the chain 2 passes through the upper part of the rear gear 3 when the chain 2 passes through the rear gear 3, and the backward rotation of the driving wheel 1 can be realized to drive the rear gear 3 to rotate forward by the adjustment, so that the riding of the bicycle is not influenced; and the speed change is carried out by adjusting different driven gears.

Retaining ring 8 is installed in the outside of drive wheel 1, and 8 fixed mounting epaxial along with the axle is one to rotate, and the diameter of retaining ring 8 is greater than the maximum diameter of drive wheel 1, and retaining ring 8's structure is provided with circle pole 9 of fixed mounting on ratchet 2 for inside little ring passes through circle pole and outside big ring fixed connection in the middle hole, drives ratchet 2 and drive wheel 1 through circle pole 9 and rotates.

The front support of the driving wheel 1 is fixedly provided with an installation frame 10 in a welding mode, the installation frame 10 and a bicycle lower oblique lever form a tripod shape, a rotating shaft is installed in end point holes of the tripods on two sides, a pedal 11 is rotatably installed through the rotating shaft, the pedal 11 is in a rectangular plate shape, the pedal 11 can be placed on a round rod 9, the ratchet 2 and the driving wheel 1 are reversed by stepping the pedal 11 up and down, and complete circular motion is completed; the length of the pedal 11 is larger than the diameter of the retainer ring 8.

In addition, when the chain 2 of the present invention is removed or damaged, the extension bracket 4, the first gear 5, the transmission rod 6 and the second gear 7 can be connected to the driving wheel 1 and the rear gear 3 by twisting the chain 2 into a horizontal figure "8" shape, and the forward movement can be driven by the up-and-down stepping of the pedal 11.

In addition, the driving wheel 1 of the present invention may be provided with a plurality of driving gears having different diameters, and the driving gear and the driven gear may be engaged with each other by changing the driving gear and the driven gear.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape, principle and the like of the utility model are covered by the protection scope of the utility model.

Claims

1. A novel bicycle drive structure which is characterized in that: the bicycle comprises a driving wheel (1), wherein the driving wheel (1) is arranged in the middle of the bicycle, the driving wheel (1) is of a gear type, and the driving wheel (1) is connected with a rear gear (3) through a chain (2); a ratchet wheel is concentrically and coaxially arranged in the rear gear (3); welded fastening extension frame (4) on the support of rear gear (3), the tip that rear gear (3) were kept away from in extension frame (4) is higher than rear gear (3), the tip of extension frame (4) rotates first gear of installation (5), still fixed mounting connecting rod (6) on the support of rear gear (3), the tip of connecting rod (6) is less than rear gear (3) and rotates installation second gear (7), the connection order of chain (2) is drive wheel (1), first gear (5), second gear (7), rear gear (3), drive wheel (1), and wherein the downside of chain (2) passes through from the top of rear gear (3), the reversal of drive wheel (1) drives the corotation of rear gear (3) and rear wheel.

2. The novel bicycle drive structure of claim 1, wherein: retaining rings (8) are arranged on two sides of the bicycle outside the driving wheel (1), and a round rod (9) fixed with the driving wheel (1) is rotatably arranged between the retaining rings (8).

3. A novel bicycle drive arrangement according to claim 2, wherein: fixed mounting bracket (10) on the support body in retaining ring (8) the place ahead, installation footboard (11) rotate on mounting bracket (10), footboard (11) can be put on round bar (9) and are stepped on.

4. A novel bicycle drive arrangement according to claim 3, wherein: the driving wheel (1) can be driven to complete circular motion by stepping the pedal (11) up and down.

5. The novel bicycle drive structure of claim 1, wherein: a plurality of driven gears with different sizes are mounted at the concentric position of the rear gear (3), and variable speed adjustment is performed by adjusting different driven gears to be the rear gear (3).